/* ============================================
   BADMINTON SOCIAL CLUB - MODERN SPORTS THEME
   ============================================ */

/* === COLOR PALETTE === */
:root {
    /* Primary Badminton Colors */
    --badminton-primary: #1e88e5;        /* Vibrant Blue */
    --badminton-primary-dark: #1565c0;   /* Deep Blue */
    --badminton-primary-light: #42a5f5;  /* Light Blue */
    
    /* Secondary Sport Colors */
    --badminton-secondary: #ff6f00;      /* Energetic Orange */
    --badminton-secondary-dark: #e65100;
    --badminton-secondary-light: #ff9800;
    
    /* Success & Status Colors */
    --badminton-success: #43a047;        /* Fresh Green */
    --badminton-warning: #ffa726;        /* Warning Orange */
    --badminton-danger: #e53935;         /* Alert Red */
    --badminton-info: #29b6f6;           /* Info Blue */
    
    /* Neutral Colors */
    --badminton-dark: #212121;
    --badminton-gray-dark: #424242;
    --badminton-gray: #757575;
    --badminton-gray-light: #e0e0e0;
    --badminton-gray-lighter: #f5f5f5;
    --badminton-white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1e88e5 0%, #1565c0 100%);
    --gradient-secondary: linear-gradient(135deg, #ff6f00 0%, #e65100 100%);
    --gradient-success: linear-gradient(135deg, #43a047 0%, #2e7d32 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* === BASE STYLES === */
html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--badminton-dark);
    background: var(--badminton-gray-lighter);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: linear-gradient(180deg, rgba(30, 136, 229, 0.03) 0%, rgba(255, 111, 0, 0.03) 100%);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--badminton-dark);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* Blazor's FocusOnNavigate programmatically focuses the first h1 after every
   navigation, which triggers the browser's default focus outline on the heading.
   Suppress it — headings are not interactive controls. */
h1:focus, h2:focus, h3:focus, h4:focus, h5:focus, h6:focus {
    outline: none;
}

h1 {
    font-size: 2.5rem;      /* 40px */
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;        /* 32px */
    margin-bottom: 1.25rem;
}

h3 {
    font-size: 1.5rem;      /* 24px */
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.25rem;     /* 20px */
    margin-bottom: 0.75rem;
}

h5 {
    font-size: 1.125rem;    /* 18px */
    margin-bottom: 0.5rem;
}

h6 {
    font-size: 1rem;        /* 16px */
    margin-bottom: 0.5rem;
}

p {
    font-size: 1rem;        /* 16px */
    margin-bottom: 1.25rem;
    color: var(--badminton-gray-dark);
    line-height: 1.6;
}

.text-primary {
    color: var(--badminton-primary) !important;
}

.text-secondary {
    color: var(--badminton-secondary) !important;
}

/* === LINKS === */
a {
    color: var(--badminton-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--badminton-primary-dark);
}

/* === BUTTONS === */
.btn {
    font-size: 1rem;        /* 16px */
    font-weight: 600;
    padding: 0.625rem 1.5rem;
    border-radius: 8px;
    border: none;
    transition: all var(--transition-normal);
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-normal), height var(--transition-normal);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--badminton-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--badminton-white);
    box-shadow: var(--shadow-sm);
}

.btn-success {
    background: var(--gradient-success);
    color: var(--badminton-white);
    box-shadow: var(--shadow-sm);
}

.btn-outline-primary {
    border: 2px solid var(--badminton-primary);
    color: var(--badminton-primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--badminton-primary);
    color: var(--badminton-white);
}

.btn-outline-success {
    border: 2px solid var(--badminton-success);
    color: var(--badminton-success);
    background: transparent;
}

.btn-outline-success:hover {
    background: var(--badminton-success);
    color: var(--badminton-white);
}

.btn-outline-info {
    border: 2px solid var(--badminton-info);
    color: var(--badminton-info);
    background: transparent;
}

.btn-outline-info:hover {
    background: var(--badminton-info);
    color: var(--badminton-white);
}

.btn-outline-danger {
    border: 2px solid var(--badminton-danger);
    color: var(--badminton-danger);
    background: transparent;
}

.btn-outline-danger:hover {
    background: var(--badminton-danger);
    color: var(--badminton-white);
}

.btn-sm {
    font-size: 0.875rem;    /* 14px */
    padding: 0.5rem 1rem;
}

.btn-lg {
    font-size: 1.125rem;    /* 18px */
    padding: 0.875rem 2rem;
}

/* === CARDS === */
.card {
    border: none;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    background: var(--badminton-white);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.08) 0%, rgba(30, 136, 229, 0.02) 100%);
    border-bottom: 2px solid var(--badminton-gray-light);
    padding: 1.25rem 1.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--badminton-dark);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: var(--badminton-gray-lighter);
    border-top: 1px solid var(--badminton-gray-light);
    padding: 1rem 1.5rem;
}

/* Sport-themed Card Variations */
.card-sport {
    border-left: 4px solid var(--badminton-primary);
}

.card-sport-success {
    border-left: 4px solid var(--badminton-success);
}

.card-sport-warning {
    border-left: 4px solid var(--badminton-warning);
}

/* === TABLES === */
.table {
    font-size: 1rem;        /* 16px */
    background: var(--badminton-white);
}

.table thead {
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.1) 0%, rgba(30, 136, 229, 0.05) 100%);
}

.table thead th {
    font-size: 0.875rem;    /* 14px */
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--badminton-primary);
    padding: 1rem;
    border-bottom: 2px solid var(--badminton-primary);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background-color: rgba(30, 136, 229, 0.04);
}

.table tbody td {
    padding: 0.875rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--badminton-gray-light);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(30, 136, 229, 0.02);
}

/* === FORMS === */
.form-label {
    font-size: 1rem;        /* 16px */
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--badminton-dark);
}

.form-control, .form-select {
    font-size: 1rem;        /* 16px */
    padding: 0.75rem 1rem;
    border: 2px solid var(--badminton-gray-light);
    border-radius: 8px;
    transition: all var(--transition-fast);
    background: var(--badminton-white);
}

.form-control:focus, .form-select:focus {
    border-color: var(--badminton-primary);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.1);
    outline: none;
}

/* === BADGES === */
.badge {
    font-size: 0.875rem;    /* 14px */
    font-weight: 600;
    padding: 0.5rem 0.875rem;
    border-radius: 20px;
    letter-spacing: 0.02em;
}

.badge-primary {
    background: var(--gradient-primary);
}

.badge-success {
    background: var(--gradient-success);
}

.badge-warning {
    background: var(--badminton-warning);
    color: var(--badminton-white);
}

.badge-danger {
    background: var(--badminton-danger);
}

/* === ALERTS === */
.alert {
    font-size: 1rem;        /* 16px */
    padding: 1rem 1.25rem;
    border-radius: 12px;
    border: none;
    box-shadow: var(--shadow-sm);
}

.alert-primary {
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.15) 0%, rgba(30, 136, 229, 0.05) 100%);
    color: var(--badminton-primary-dark);
    border-left: 4px solid var(--badminton-primary);
}

.alert-success {
    background: linear-gradient(135deg, rgba(67, 160, 71, 0.15) 0%, rgba(67, 160, 71, 0.05) 100%);
    color: var(--badminton-success);
    border-left: 4px solid var(--badminton-success);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 167, 38, 0.15) 0%, rgba(255, 167, 38, 0.05) 100%);
    color: #ef6c00;
    border-left: 4px solid var(--badminton-warning);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.15) 0%, rgba(229, 57, 53, 0.05) 100%);
    color: var(--badminton-danger);
    border-left: 4px solid var(--badminton-danger);
}

/* === NAVIGATION === */
.navbar {
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    background: var(--gradient-primary) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--badminton-white) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand:hover {
    transform: scale(1.05);
    transition: transform var(--transition-fast);
}

.nav-link {
    font-size: 1rem;        /* 16px */
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9) !important;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--badminton-white) !important;
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    color: var(--badminton-white) !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--badminton-white);
    border-radius: 2px;
}

/* === CONTENT AREA === */
.content {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

/* === PAGE HEADERS === */
.page-header {
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--badminton-white);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border-left: 5px solid var(--badminton-primary);
}

.page-header h1 {
    font-size: 2.5rem;      /* 40px */
    margin-bottom: 0.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.125rem;    /* 18px */
    color: var(--badminton-gray);
    margin-bottom: 0;
}

/* === STATS CARDS === */
.stat-card {
    background: var(--badminton-white);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--badminton-primary);
    opacity: 0.05;
    border-radius: 0 0 0 100%;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    color: var(--badminton-primary);
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--badminton-dark);
    margin-bottom: 0.25rem;
}

.stat-card .stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--badminton-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === SPORT ICONS === */
.sport-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--gradient-primary);
    color: var(--badminton-white);
    font-size: 1.5rem;
}

.sport-icon-lg {
    width: 64px;
    height: 64px;
    font-size: 2rem;
}

.sport-icon-success {
    background: var(--gradient-success);
}

.sport-icon-warning {
    background: var(--badminton-warning);
}

/* === LOADING STATES === */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(33, 33, 33, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner-border {
    border-color: var(--badminton-primary);
    border-right-color: transparent;
}

/* === VALIDATION === */
.valid.modified:not([type=checkbox]) {
    outline: 2px solid var(--badminton-success);
    outline-offset: 2px;
}

.invalid {
    outline: 2px solid var(--badminton-danger);
    outline-offset: 2px;
}

.validation-message {
    color: var(--badminton-danger);
    font-size: 0.875rem;
    margin-top: 0.375rem;
    font-weight: 500;
}

/* === UTILITIES === */
.bg-sport-primary {
    background: var(--gradient-primary) !important;
}

.bg-sport-secondary {
    background: var(--gradient-secondary) !important;
}

.text-sport-primary {
    color: var(--badminton-primary) !important;
}

.text-sport-secondary {
    color: var(--badminton-secondary) !important;
}

.border-sport {
    border: 2px solid var(--badminton-primary) !important;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

/* === RESPONSIVE === */
@media (max-width: 991.98px) {
    .navbar-brand {
        font-size: 1.25rem;     /* 20px on tablets */
    }
    
    h1 {
        font-size: 2rem;        /* 32px on tablets */
    }
    
    .page-header h1 {
        font-size: 2rem;        /* 32px on tablets */
    }
}

@media (max-width: 767.98px) {
    html, body {
        font-size: 16px;        /* Maintain 16px on mobile for accessibility */
    }
    
    h1 {
        font-size: 1.75rem;     /* 28px on mobile */
    }
    
    h2 {
        font-size: 1.5rem;      /* 24px on mobile */
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1.25rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
}

/* === PRINT STYLES === */
@media print {
    .navbar, .btn, .card:hover {
        box-shadow: none;
    }
}